A backplane operative to drive an array of emissive pixel elements forming a part of an automotive head lamp assembly is disclosed. Each pixel element comprises a memory cell operative to pulse width modulate a current mirror pixel drive circuit configured to drive an emissive element. The array of emissive pixel elements is divided into a plurality of interdigitated rows or columns serviced by independent row drivers or independent column drivers that may be driven by data selected to randomize the order in which the data on adjacent pixels of the same row are written, thereby effectively substantially reducing the visibility of any residual structures that may be present in the data driving the pixels of adjacent columns.
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3. The display of claim 1, wherein the second modulation sequence is 180 degrees out of phase with the first modulation sequence.
6. The display of claim 1, wherein the first row decoder further includes a third plurality of row decoder circuits, a row decoder circuit of the third plurality of row decoder circuits being configured to drive pixel drive circuits for a third subset of the plurality of columns in correspondence with a third modulation sequence, the third modulation sequence being different than the first modulation sequence and the second modulation sequence.
7. The display of claim 6, wherein the second row decoder further includes a fourth plurality of row decoder circuits, a row decoder circuit of the fourth plurality of row decoder circuits being configured to drive pixel drive circuits for a fourth subset of the plurality of columns in correspondence with a fourth modulation sequence, the fourth modulation sequence being different than the first modulation sequence, the second modulation sequence, and the third modulation sequence.
9. The display of claim 7, wherein the first modulation sequence includes a first plurality of sequential write pointers.
13. The method of claim 11, wherein the second modulation sequence is 180 degrees out of phase with the first modulation sequence.
18. The method of claim 17, wherein the second modulation sequence is 90 degrees out of phase from the first modulation sequence.
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April 10, 2023
August 20, 2024
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